Agreed -- except the (exposed) EAST Temple staircase entry has been covered over...
TXnMA
The tunnels were not filled. Additionally, it appears that it would impossible to get dredging equipment and some really difficult permits to fill the tunnels with the sand and coral from the local area.
So, they are probably completely functional.
Watch Q be Nicholas [Coppola] Cage, with others.
Agreed -- except the (exposed) EAST Temple staircase entry has been covered over...
TXnMA